A Doberman equipped with about as much punch as it can carry, with the greatest range and the greatest yield in raw megatons of firepower. A well-organized pack of Assault-ready Dobermen has hever failed to subdue a target.
The price for all that firepower is speed. Bogged down under all that gear, the thrusters become all but useless. These brutes are especially susceptible to small threats; RPG snipers and their lot. When dropships are unavailable, swift support units should accompany Assault Dobermen on long marches for added defense.
Technically, a Doberman can wield a pair of GrimScythes, along with the Howitzers. However, this is rarely seen in the field, as the weight bogs the mech down to a crawl, effectively turning an otherwise mobile unit into an immobile battery. Also, I don't have the parts to build 2 GrimScythes at once.

Weapons stowed. Whenever possible, the Doberman will hold the massive plasma cannon with both hands, distributing the weight more evenly.

This is good, nice design, the reason I didn't give you 4 stars is that there are to many colours, maybe turn it all in gray, it would stand out more, just a thought, good luck on your next creation.
Kris,